Improvement in shuttles for looms



@uitrit tetts @anni ffm.

AUGUSTUS D. CLARK, OF WILKINSON'VILLE, MASSACHUSETTS.

Lettera .Patent No. 81,344, dated `August 25, 1868.

'IMPRQVlEllldlIT'Il IN SHUTTLBS POR LOOMS.

dlgs npttle aferra it in tten items @anni :un making ont et tte arme.

TO ALL TO WHOM THESE PRESENTS SHALL COME:

Beit known that I, AUGUSTUS D. CLARK, of Wilkinsonrille, in the county of Worcester, and State of. Massachusetts, have invented certain new and useful Improvements in Weavers Shuttles; and do hereby declare the following to be' a full, clear, and exact description thereof, due reference being had to the accompanying drawings, making part of this specification, and in which- Figures 1, 2, 8, and 4 are vertical and longitudinal sections of shuttles containing my improvements.

Figure 5 being a section of the head of the bobbin-spindle, showing a`peculiar application of aspiral spring to such head. r

The object of this invention is the production of a shuttle, whose bobbin-spindlc is free from anyjerking,l irregular movements, the shuttle at the same time being capable of accommodating itself to bobbins whose heads are of different diameters, and enabling the bobbins to be introduced to or removed from the shuttle very readily and expeditiously. v. 1 i y The principal feature in this invention is the employment of a vertical pin, passing loosely through the spi'ndle-head,in advance'oi the fulcrum ot'such head, one end of` suoli pin resting 'upon the'itopof the pletespring aixcd to the bottom of the head, and its opposite end, when the` spindle is raised, bearing against the .upper part of the recess of the shuttle in which the spindle-head moves, thisarrangementfof the sliding pin serving to separate the spring-catch from' the spindle-head, when the", spindle is raised out of alignment with the axis of the shuttle, and allow the bobbin to be introduced orfremovedfromthe shuttle, in manner as hereinafter explained. i l l In the drawings, above mentioned, the body of the shuttle is shown, at,a',las .made substantially in the ordinary form of weavers shuttles. -Its bobbin-spindle is shown'at la, the head of such spindle yis shown at c, and -its fulcrum at d, the head of the spindle being disposed within a chamber, a, made inthe-body ofthe shuttle.

In figs. Vl and 2 of the drawings, the spindle-head is shown as formed with a backward extension, c, to the under side of which a plate-spring, is secured, theiront end of such platespring extending in advance of the spindle-head, and being given a short upward bend or lip, g, for entering "the groove in the head of the bobbin,

A pin, z, is inserted within a vertical hole, z', made through the spindle-head, immediately in advance 0f its fulcrum, the lower end ot such pin resting upon the tep of the spring f, while its upper end rests a short distance-below an abutment or stop,j, forming the upper terminus of the chamber c. vf v As the spindle is partially rotated on its fule'rum, in the aetnof raising it,`fo r tl1e p i1rpose of removing an empty irobbinV or cop, or supplying a i'ull one,the pin L abuts against the stop y', and remains stationary while the spindle-head moves upon it, and as a 'consequence separates from the spring-eatoh f, and frees the hold of ltho'latter upon the bobbinlhead and allows of its removal. i l

Furthermore, a slidingbolt, Z, is disposed within a recess, m, made in the Vbody of the Shuttle, in rear et"4 the spindle-head, and about in alignment with its fulcrnm, the said bolt having a. fiat, rectangular head, n., formed upon its front end, which bears against the rear side ofthe spindle-head, a coiled spring, o, being coiled about the bolt, und servingV to advanceA it, the pressure of such spring thereupon serving to return the bobbinspindle back-to its position within the bobbin-chaniber of the shuttle, it being borne in mind that the shape of the spindle-head, and the disposition of its fulcrnm, with respect to the bolt Z, are to be such that the bolt shall serve tchold the spindle in either of its extremes ot movement.

By the above-described arrangement of the spring and sliding bolt or abutment, Iobtain the full-force of the spring in a straight line, and consequently a smooth and even movement of the spindle upon its fulcrum, which would not be the ease if one end ofthe spring were attached directly to the spindle-head, and its opposite to the shuttle-body.

Fig. 2 of the accompanying drawings shows a bent plate-spring, q, applied to the spindle-head, in place of the sliding bolt and coiled spring before described. A

In this case, the spring is first passed about ahorizontalpin, 9', extendinglthrough thc shuttle, innrcar of tbe spindle heed, then given an upward bend, s, to press against the spindle-head, end next given a horizontal bend, t, this latter bend extending over and upon the top ofthe pin n, before referredfto.

The act-ion of the plate-spring has an equivalent mechanical effect to that ofthe sliding bolt, and works in a smoothand even manner. v

In either of the examples shown in figs. 1 and 2, the shuttle isconverted into a. cop-shuttle, by removing the catch from the lower plate-spriug, and splitting the spindle.

Fig. 3 of the drawings shows the application of the sliding bolt t-o a. cop-shuttle of simple construction. In this case, the lower plate-spring, as well as the extension oi' the spindle-head, is omitted.

Fig. 4 of the drawings shows the spindle actuated by a horizontal yoke, t, encompassing its rear end, and pivoted to its opposite sides by n fulcrum, u, disposed in advance of the fulcrum of such head, the-yoke itself being retracted by a coiled spring, o, fixed-to its rear end, the opposite end of such springl being secured to the body of the shuttle in a suitable mcnner,tl1c said yoke-spindle head and spring being contained within a chamber, w, formed in such shuttle-body, the cxtreme lowest position of the spindle being maintained by its bearing-covering in contact with a projection, x, xed to the bottom of the chamber w.

This letter arrangement of parts gives a very desirable movement to the spindle.

Fig. 5 of the drawings shows the application of a spiral spring directly to the spindle-head, which will explain itself.`

I claim as my invention, and desire to secure by Letters Patent y 1. The combination and arrangement of the pin 7i, plate f, and bent spring g, constructed substantially as herein described. v y,

2. The bent spring g, formed as shown, for the purposeot1 actuating both the spindle-headland the pinz., substantially as herein specified.

AUGUSTUS D. CLARK.

Witnesses:

FRED. CURTIS, GRIFFITH. 

